Using the 95% significance level, is there a significance difference in stress levels between the three groups?

An experiment was conducted to determine if motivational techniques in management significantly impacted employee stress levels compared to no intervention. An employee survey was given to three groups: one group under a manager who started using a transformational motivation technique, one group under a manager who began using a transformational motivation technique, and then a control group with no new technique used. Stress levels were self-reported by the employees as shown below. Use alpha = 0.05

Transformational

Transactional

Control

0

2

6

7

5

5

3

3

8

5

0

9

2

1

5

Required

Using the 95% significance level, is there a significance difference in stress levels between the three groups?

Solution

Using the 95% significance level, the critical value for a F (2,12) distribution is 3.885.